Improvement in car-springs



T. F. ALLYN.

Car Spring.

Patented Jume 20, 1865.

lnve nton Witnesses= AM, PHOTO- Ll'i'HO. CU; N-Y. (OSBURNE'S PROCESS)UNITED STATES PATENT OFFICE.

T. F. ALLYN, OF GANANDAIGUA, NEW YORK.

IMPROVEMENT IN CAR-SPRINGS.

Specification forming part of Letters Patent No. 48,250, dated June 20,1865; antcdated. March 28, 1865.

To all whom it may concern.-

Be it known that I, T. F. ALLYN, of Ganandaigua, in the county ofOntario and State of New York, have invented a new and usefulImproyenient in Oar-Springs, called Allyn Car- Springs; and I do herebydeclare that the following is a full, clear, and exact description ofthe construction and operation of the same, reference bein ghad to theaceompan yin g drawings, making a part of this specification.

Figure 1 is a perspective view of my spring, which is represented as notbeing under pressure. Fig. 2 is also a perspective view of the same,being represented under pressure.

The nature of my invention consists in the construction of a metalliccar spring with square or rectangular plates curved diagonally andfastened together at the corners, and thus pairs are formed alternatelywhich bear upon each other at the corners and through the centersdiagonally, and by means of these transverse hearings or fulcra thespring is made to work or vibrate and graduate to required pressuresupon it, and by same means the fulcra or bearing-points of the platesare changed alternately by being lengthened and shortened when thespring vibrates, and it is thus, to a great extent, protected againstbreaking.

To enable others skilled in the art to make and use my invention, Iwill. proceed to describe its construction and operation.

I give all the platesB a curvature diagonally,

and with the rivets d fasten them alternately.

together at the corners, and thus the springis formed. to and from therespective corners of the spring, and when the spring is being depressedthese openings gradually close to a point, when the spring commences toreact.

It is well known that steel maybe made to deflect a given distance andnot be liable to break. Upon this principle I have constructed myspring. The plates being worked or deflected diagonally produce thedesired result, and the spring is in a complete and merchantable form.

What I claim as my invention, and desire to secure by Letters Patent,is-

The construction of a metallic car-sprin g with square or rectangularplates B, curved diagonally and fastened together alternately at thecorners with rivets d, substantially as described in my specification,and for the purpose set forth.

T. F. ALLYN.

Witnesses:

O. L, GARNER, JNo. L. SMITHMYER.

The transverse openings 0 diminish

